| NAVCAM_DVOL_BLOCK | | JUICE |
|---|
| JMAG_DL_FOB_Light_Only | This observation is introduced to characterise JMAG operations during downlink times where power resources from the SC may be more limited, and where SC attitude is driven by operational constraints In this particular observation FOB fluxgate is powered on with FSC as light-only. | JMAG |
|---|
| JMAG_DL_Light_Only | This observation is introduced to characterise JMAG operations during downlink times where power resources from the SC may be more limited, and where SC attitude is driven by operational constraints.
In this particular observation FIB & FOB fluxgates powered on with FSC as light-only. | JMAG |
|---|
| PEP_GCO500_LOW_RATE_NEUTRALS | Ganymede Circular 500 km (GCO500) Low-Rate Mode for ENA and Neutrals Measurements.
JENI , JNA and NIM on. | PEP |
|---|
| PEP_GCO500_LOW_RATE_ENERGETIC | Ganymede Circular 500 km (GCO500) Low-Rate Mode for Energetic Particle Measurements.
JENI and JoEE on.
Nadir deck to nadir. | PEP |
|---|
| PEP_GCO500_LOW_RATE_PLASMA | JDC and JEI on.
Nadir deck to nadir | PEP |
|---|
| PEP_JUPITER_EQUATORIAL_DOWNLINK_LOW_RATE | Mode for ensuring continuous coverage for in-situ particle plasma measurements while optimizing power and data volume. Should be on during downlink too. JDC and JEI on. Applies also to Jupiter High Inclination for now.
Zenith or Nadir axes within +/-45 deg of Jupiter corotation vector. | PEP |
|---|
| PEP_JUPITER_EQUATORIAL_HIGH_RATE_IN_SITU | High-resolution mode for resolving boundary crossings, fast flow bursts, etc. All sensor on, except NIM. JENI in ion-mode. Applies also to Jupiter High Inclination for now.
Zenith or nadir axes within ±45 deg of Jupiter’s corotation vector. | PEP |
|---|
| PEP_GCO500_DOWNLINK_ENERGETIC | Ganymede Circular 500 km (GCO500) Downlink Mode.
Sensors on: JENI, JoEE
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_DOWNLINK_ENA | Ganymede Circular 500 km (GCO500) Downlink Mode.
Sensors on, JNA, JENI (ENA mode)
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_DOWNLINK_PLASMA | Ganymede Circular 500 km (GCO500) Downlink Mode.
Sensors on: JDC, JEI
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU_ENA_NIM_LOWRATE | Ganymede Circular 500 km (GCO500) sensor combination low rate.
Sensors on: all
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU_NIM_HIGHRATE | Ganymede Circular 500 km (GCO500) NIM High Rate mode
Sensors on: all
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU_NIM_LOWRATE | Ganymede Circular 500 km (GCO500) sensor combination low rate
Sensors on: all
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_ENA_NIM_STARTUP | Ganymede Circular 500 km (GCO500) Sensor Startup mode.
Sensors on: JNA; NIM, JoEE, JENI (ENA mode)
Nadir deck to nadir | PEP |
|---|
| PEP_GCO5000_ENA_NIM_STARTUP | Ganymede Circular 5000 km (GCO500) Sensor Startup mode.
Sensors on: JNA; NIM, JENI (ENA mode)
Nadir deck to nadir | PEP |
|---|
| PEP_GCO5000_ENA_NIM | Ganymede GCO5000 neutral monitor mode (could be relevant also for GCO5000 & GEO) | PEP |
|---|
| PEP_GCO500_ENA_NIM | Ganymede GCO500 neutral monitor mode (could be relevant also for GCO5000 & GEO)
Sensors on: JNA; NIM, JoEE, JENI (ENA mode)
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU_ENA | Ganymede GCO500 In-situ monitor mode (could be relevant also for GCO5000 & GEO)
Sensors on: all except NIM
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU_HIGHRATE | Ganymede GCO500 In-situ monitor mode (could be relevant also for GCO5000 & GEO)
Sensors on: all except NIM
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_IN_SITU | Ganymede GCO500 In-situ monitor mode (could be relevant also for GCO5000 & GEO)
Sensors on: all except NIM
Nadir deck to nadir | PEP |
|---|
| PEP_GCO500_PLASMA_ENERGETIC | Ganymede GCO500 In-situ monitor mode (could be relevant also for GCO5000 & GEO)
All sensors on except JNA & NIM
Sensors on: JDC, JEI, JoEE, JENI (ion mode) | PEP |
|---|
| PEP_GCO5000_ENA | Ganymede GCO5000 surface and exosphere ENA imaging/sampling
Sensors on: JNA, JENI (ENA mode) | PEP |
|---|
| JMAG_CONTINOP_FIB_FOB_Light_Only | JMAG mode (FIB FOB Light Only), this mode ensures that while FIB and FOB are collecting science the Scalar sensor also has power to its laser but is not collecting science data. This helps to protect the fibres from radiation damage, necessary for the Europa phase due to its radiation environment. | JMAG |
|---|
| GALA_WARMUP_GAN | needed right before any science observation from GALA during Ganymede phase (when working at 30Hz TBC)
Duration: 90min | GALA |
|---|
| SWI_SCIENCE | Place holder:
one of the ASW mode, where the science script will be run ( i.e. from SWI_TSYS_CTS down to SWI_MOON_NADIR_STARE_FS) during the mission | SWI |
|---|
| SWI_SPECTRAL_SCAN_CTS_FS | Same as SWI SPECTRAL SCAN CTS PS, except a frequency-switch calibration mode is used instead of position-switch. It enables spending ∼100% of the integration
time on-source. If the purity of the spectral band is good enough, there is an option to precompute ON−OFF for the CTS before downlink. A single execution can cover up to 9 tunings.
Pointing Type: S/C: nadir or limb. Instrument: nadir or limb, using the SWI mechanism if S/C points
nadir and to reach the moons | SWI |
|---|
| SWI_SPECTRAL_SCAN_CTS_PS | Investigation of the atmospheric composition of Jupiter and the Galilean
moons. The whole frequency range available to SWI is scanned. This mode is nominally meant for deep integrations and requires numerous repetitions (e.g. monitoring of the moons). Two
CTS spectra are recorded for 60 seconds over 10000 channels (16bit coding). Position-switch
calibration method. A single execution can cover up to 13 tunings.
Pointing Type: S/C: nadir or limb. Instrument: nadir or limb, using the SWI mechanism if S/C points
nadir and to reach the moons | SWI |
|---|
| SWI_SPECTRAL_SCAN_ACS_FS | Same as SWI SPECTRAL SCAN ACS PS, except a frequency-switch calibration mode is used instead of position-switch. It enables spending ∼100% of the integration
time on-source. The ACS does not allow to pre-compute ON−OFF before downlink. A single
execution can cover up to 11 tunings.
Pointing Type: S/C: nadir or limb. Instrument: nadir or limb, using the SWI mechanism if S/C points
nadir and to reach the moons | SWI |
|---|
| SWI_SPECTRAL_SCAN_ACS_PS | Investigation of the atmospheric composition of Jupiter and the Galilean
moons. The whole frequency range available to SWI is scanned. This mode is nominally meant
for deep integrations and requires numerous repetitions (e.g. monitoring of the moons). Two
ACS spectra are recorded for 60 seconds over 1024 channels. Position-switch calibration method.
A single execution can cover up to 16 tunings.
Pointing Type: S/C: nadir or limb. Instrument: nadir or limb, using the SWI mechanism if S/C points
nadir and to reach the moons | SWI |
|---|
| PEP_FLYBY_FAR_DEPARTURE_LOW_RATE_ENA | Europa environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (high time resolution for short term variations)
Europa imaging (JNA) & Europa torus (JNA imaging + in-situ)
All sensors on except NIM (in standby or off). JENI in Combo mode (half in ion mode, half imaging)
NIM in ram direction (X-Y S/C plane) | PEP |
|---|
| PEP_FLYBY_FAR_DEPARTURE_LOW_RATE | Europa environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (high time resolution for short term variations)
Europa imaging (JNA) & Europa torus (JNA imaging + in-situ)
All sensors on except NIM (in standby or off).
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI) | PEP |
|---|
| PEP_FLYBY_FAR_DEPARTURE | | PEP |
|---|
| PEP_FLYBY_DEPARTURE | Europa environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (high time resolution for short term variations)
Europa imaging (JNA) & Europa torus (JNA imaging + in-situ)
All sensors on except NIM (in standby or off)
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI) | PEP |
|---|
| PEP_FLYBY_CLOSEST_APPROACH | Local moon-magnetosphere interaction observation: plasma moments, energetic particle spectra and pitch angle distributions (high time resolution for short term variations)
Europa imaging (JNA). Dense exosphere (NIM)
Sensors on: all
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI)
Moon in JNA FoV
Angle of NIM_NEUION_S0 from JUICE_EUROPA_RAM or JUICE_GANYMEDE_RAM or JUICE_CALLISTO_RAM velocity less than 5 deg at CA
Solar panel rotation angle (SADM) SADM > 74° or
SADM < -74°
Moon in JNA FoV | PEP |
|---|
| PEP_FLYBY_APPROACH | Moon environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (low time resolution). Moon imaging (JNA) & Europa torus (JNA imaging + in-situ) if near Europa. High altitude exosphere (NIM)
Sensors on: all
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI ions)
Moon in JNA FoV
Angle of NIM_THERMAL_1 or THERMAL_2 from
JUICE_EUROPA_RAM or JUICE_GANYMEDE_RAM or JUICE_CALLISTO_RAM velocity less than 60 deg | PEP |
|---|
| PEP_FLYBY_FAR_APPROACH_MEDIUM_RATE | Moon environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (low time resolution). Europa torus (JNA imaging + in-situ) if near Europa
Sensors on: all
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI ions)
Moon in JNA FoV
Angle of NIM_THERMAL_1 or THERMAL_2 from
JUICE_EUROPA_RAM or JUICE_GANYMEDE_RAM or JUICE_CALLISTO_RAM velocity less than 60 deg | PEP |
|---|
| PEP_FLYBY_FAR_APPROACH_LOW_RATE | Moon environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (low time resolution). Europa torus (JNA imaging + in-situ) if near Europa
Sensors on: all
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI ions) | PEP |
|---|
| PEP_FLYBY_FAR_APPROACH_NIM_BACKGROUND | NIM background measurements part of switch on procedure.
Moon environment monitoring: plasma moments, energetic particle spectra and pitch angle distributions (low time resolution). Europa torus (JNA imaging + in-situ) if near Europa
Sensors on: all
Corotation in JEI or JDC FoV
Full pitch angle coverage (JDC, JEI, JoEE, JENI ions) | PEP |
|---|
| RIME_EUROPA_FLYBY | RIME flyby observations or observations without on-board processing | RIME |
|---|
| UVS_IRR_SAT | Obtain reflectance spectra of irregular satellites | UVS |
|---|
| UVS_IO_SCAN | Similar to UVS_DISK_SCAN, but including extra emission lines e.g. from S and Cl. Also requires different spatial binning since Io is more distant | UVS |
|---|
| UVS_SAT_TRANSIT | Measure absorption of Jupiter airglow by satellite atmospheres as they transit Jupiter's disk, to constrain satellite atmospheric composition and variability.
Pointing: nadir (Point slit N-S on Jupiter's disk and wait for moon to transit) | UVS |
|---|
| UVS_EUR_SCAN_HIGH_RES | Similar to UVS_DISK_SCAN but higher resolution.
pointing: start at -1.5 satellite radii from the satellite centre, scan in the direction perpendicular to the slit across the disk, ending at +1.5 satellite radii from the centre | UVS |
|---|
| UVS_SAT_SURF_HP | As UVS_SAT_SURF_AP but using the high resolution port for improved spatial resolution in key surface regions | UVS |
|---|
| UVS_SAT_SURF_AP | Pushbroom observations near flyby closest approach to investigate surface composition | UVS |
|---|
| MAJIS_STANDBY | After switch-on of MAJIS, the Boot SW automatically starts, and performs the primary boot from the PROM (Init fugitive BSW mode).
After processor modules initialization, the Boot software goes to STANDBY mode. By default, the ASW Image0 (stored in MRAM0 = ASM0) is autonomously loaded after a timeout of 30 seconds. MAJIS then enters into ASW init Mode and then into SAFE mode.
In STANDBY Mode, all channels are off, and only DPU HK SID1 are received.
MAJIS needs to be maintained in STANDBY mode using the TC(17,1) in the following cases :
- upload (using service 6) of new ASW images (or CUSW, or firmware) into MRAM: FCP-MAJ-070 describes the maintenance process.
- upload a new BROWSE Table FCP-MAJ-060 into MRAM
- select ASW Image1 and then start ASW Image 1 instead of teh default ASW Image0. FCP-MAJ-062
- any other update of MRAM using service 6 | MAJIS |
|---|
| MAJIS_SERVICE | MAJIS in service MODE (1 or 2 channels with FPE/FPA off + AUX w/o loads)
SERVICE Mode as soon as one or two channels are switched ON (PE and AUX)
From SERVICE, it is possible to return to SAFE mode or to change the status of MAJIS to DIAG2, DIAG3 or SCIENCE
Duration: less than 10min | MAJIS |
|---|
| MAJIS_SAT_LIMB_TRACK | Continuous stare observation of a satellite limb during flyby using inertial pointing from satellite, dayside or nightside. Additional offsets within limb by means of internal pointing mirror. Scanning with MAJIS internal mirror. (--> ‘track limb’).
Pointing: S/C limb tracking (‘track limb’)
satellite otientation: SLIT tangent to the limb (slit not aligned with S/C motion)
Duration: 60min | MAJIS |
|---|
| MAJIS_SAT_LIMB_SCAN | Flyby observations of the satellite dayside or nightside limbs with vertical (N-S) slews across track, during yaw-steering phase. Satellite offsets to limb around Y-axis (E-W) before each observation, then satellite offsets around X axis (N-S) between each slit acquisition or continuous slew pointing.
Pointing: S/C slew scan centred a limb ( ‘Limb slew scan mode’).
Satelliteo orientation: Slit tangent to the limb
Duration: 60min | MAJIS |
|---|
| MAJIS_SAT_DISK_SLEW | Flyby observations of the satellite surface with vertical (N-S) slews across track, during yaw-steering phase. One or two slews (pole to pole) necessary to complete dayside coverage. Satellite offset around Y-axis (E-W) before each observation, then satellite offsets around X axis (N-S) between each slit acquisition.
Pointing: NADIR Pointing, YS, S/C scan (slew) with offset around Y (‘mosaic mode’ tbc). MAJIS slit perpendicular to the ground-track.
Satellite orientation: MAJIS slit perpendicular to the ground-track
Duration: 30 min | MAJIS |
|---|
| MAJIS_SAT_DISK_SCAN | Observation of a distant satellite dayside or nightside surface. Satellite offset required for pointing then disk coverage is achieved using the internal pointing mirror scanning in the Y (N-S) direction.
Pointing: NADIR-P with possible offset around Y, YS, MAJIS scan (‘Nadir scan’).
Satellite orientation: MAJIS slit perpendicular to the ground-track
Duration: 30min | MAJIS |
|---|
| MAJIS_SAFE | Initiated after ASW loading
All channels are off and no PE HK are generated. Only ME HK are generated (only DPU ON)
From SAFE it is possible 1) to switch OFF MAJIS, 2) to change the status of MAJIS to DIAG1 or SERVICE mode
Duration: less than 5min | MAJIS |
|---|
| MAJIS_Ring_Occultation | Observation of a star occulted by the rings
Scan windowing of 9 lines centered on the star (1 scan step = 1/3 MAJIS IFOV) possible
Pointing: Inertial. For each occultation, transit of TBD min
Satellite orientation: Inertial pointing of the S/C towards the position of the star to maintain MAJIS slit fixed on it. These occultation observations need to be consolidated in the future (star atlas, signal, Tint, S/C inertial capabilities). Scan mirror can be used to mitigate APE drift | MAJIS |
|---|
| MAJIS_MainRING _PhaseCurve | Observations of the main rings at various phase angles (N angles), one ansae (always the same), 20 vertical lines
Pointing: S/C pointing ring plane at 1.8 R_J (extremity of main rings)
Satellite orientation: OFF-NADIR, Ring plane while maintaining horizontal orientation of MAJIS slit, MAJIS scan mode activated for vertical sampling centered on the rings (20 lines)
Duration: 200 sec for one observations at a given phase angle | MAJIS |
|---|
| MAJIS_MainRING _LowPhase | Observations of the main rings (2 ansa), no tracking of azimuthal structure, 20 vertical lines
pointing: OFF-NADIR, S/C pointing centered on the extremity of main rings, S/C depointing required for the two ansa
Satellite orientation: Maintaining the MAJIS slit parallel to radial axis of main rings, MAJIS scan mode activated for vertical sampling centered on the rings (20 vertical lines)
Duration:400 sec (excluding the S/C repointing to the other ansae) | MAJIS |
|---|
| MAJIS_MainRING _HighPhase | Observations of the main rings (2 ansa) at high phase (forward scattering light), no tracking of azimuthal structure, no spatial binning to increase spatial resolution.
Pointing: OFF-NADIR, S/C pointing centered on the extremity of main rings, S/C depointing required for the two ansa
Satellite orientation: Maintaining the MAJIS slit parallel to radial axis of main rings, MAJIS scan mode activated for vertical sampling (20 vertical lines) centered on the rings
Duration: 400 sec (excluding the S/C repointing to the other ansae) | MAJIS |
|---|
| MAJIS_JUP_STELLAR_OCC | MAJIS will acquire several “subcubes” (number depends upon planet's speed over the sky) around the (fixed) star position, at different angular distances between the star and the planet's limb during the ingress/egress.
Each sub-cube spans over several lines (around 6, less if S/C capability allows it) to compensate for possible pointing inaccuracies.
Bright far moons can be used instead of stars as sources to decrease the repetition integration (and therefore spatial sampling) as the orbital velocity ranges from ~ 5 km/s at apojove to ~ 13 km/s at perijove
satellite orientation: LIMB TANGENT (preferred, otherwise VERTICAL), to minimize straylight
duration:
About 10min
66 sec (max) for each subcube. Time interval between sub-cubes as small as possible for better vertical coverage. Total number of cubes depends upon relative angular speed between star and limb. | MAJIS |
|---|
| MAJIS_JUP_LIMB_SLEW | The scan the atmosphere of Jupiter over the limb up to 3000k is performed with a specific slew of the S/C
Individual lines are largely overlapped to provide actual supersampling (x 10) in the spatial domain and allow sub-pixel resolution by deconvolution.
Typically, we have cubes of about 300 lines by 50 pixels (~7500 km)
Pointing type:
OFF-NADIR (nominal pointing position over the Jupiter limb), continuous tracking (‘track tangent limb’)
satellite orientation:LIMB TANGENT (MAJIS slit tangent to the limb), very slow s/c slew to get oversampling (10 lines corresponding to one pixel IFOV)
Duration: 55 min for each cube (300 lines) | MAJIS |
|---|
| MAJIS_JUP_LIMB_SCAN | The MAJIS pointing mirror is used to scan the atmosphere of Jupiter over the limb up to 3000km.
The scan mirror step of 1/3 MAJIS IFOV shall constrain the spatial sampling.
Typically, we have cubes of about 20 lines by 50 pixels (~7500 km with 1 pixel=150 km)
Pointing type: OFF-NADIR (nominal pointing position over the Jupiter limb), continuous tracking (‘track tangent limb’)
satellite orientation: LIMB TANGENT (slit tangent to the limb)
Duration: 4 min for each cube (20 lines) | MAJIS |
|---|
| MAJIS_JUP_HIGH_FREQ_MONITORING | Study of the evolution of atmospheric features at high temporal frequency.
Tracking of features on the Jovian disc, on dayside as well as on nightside, with limited latitudinal coverage.
MAJIS will acquire several “subcubes” with limited number of lines (about 40) using the scan mirror centered at one fixed position over the nominal Jupiter coordinate grid and reference surface.
Planet rotation is compensated by continuous slew of the spacecraft (stop when acquiring).
pointing type: OFF_NADIR, NYS, DISCONTINUOUS SLEW (‘track landmark scan’)
satellite orientation: HORIZONTAL
Duration: 80 sec for each sub-cube.
Total duration about 5 h (1/2 of rotation period) | MAJIS |
|---|
| MAJIS_JUP_EVENT_MONITORING | Study of the evolution of unusual phenomena in Jupiter atmosphere, especially in their zonal evolution MAJIS will acquire several “subcubes” with limited number of lines (about 80) as follows:
1. a series of sub-cubes (from 1 to 4) is acquired with the scan mirror to get the coverage of a limited latitude region at all longitudes on the visible side of the planet. Satellite is re-pointed before acquiring each sub-cube
2. the series at previous point is repeated at fixed time intervals (in the order of 1 h, TBC) to monitor the temporal evolution.
Pointing type: YS, Series of OFF-NADIR pointings (‘off-nadir scan mode’)
satellite orientation: HORIZONTAL
Duration:
160 sec for each sub-cube.
Time between series defines actual temporal sampling and is variable (zero data rate here).
Total duration about 5 h (1/2 of rotation period) | MAJIS |
|---|
| MAJIS_JUP_DISK_SLEW | Observations of Jupiter clouds and spectroscopy of minor gases.
Scanning the instrument slit over Jovian disk (vertical direction) by means of the S/C slew. aims to cover the entire equatorial region (-30°:+30°)
Pointing: OFF_NADIR, CONTINUOUS SLEW (« continuous S/C scan »)
Satellite orientation: HORIZONTAL
Duration: 20 min per cube | MAJIS |
|---|
| MAJIS_JUP_DISK_SCAN | Observations of Jupiter clouds and spectroscopy of minor gases.
Scanning the instrument slit over Jovian disk (vertical direction) by means of internal pointing mirror, both dayside and nightside. Aims to cover the entire equatorial region (-30°:+30°)
pointing type: YS, NADIR with fixed offset around Y (‘nadir offset MAJIS scan’)
satellite orientation: HORIZONTAL
Duration: 20min/cube | MAJIS |
|---|
| MAJIS_JUP_DISK_MOSAIC | A series of several MAJIS_JUP_DISK_SCAN or MAJIS_JUP_DISK_SLEW
Spacecraft has to be re-pointed between individual acquisitions.
POinting type: YS, NADIR with offset around Y (‘ nadir offset MAJIS scan’’)
satellite orientation: HORIZONTAL (preferred)
Duration:
3 x (scan-duration + turnaround Y duration). Scan duration from 20 to 40 min depending on the distance from Jupiter. Turnaround ~50 min | MAJIS |
|---|
| MAJIS_JUP_AURORAL_MAPPING | Observations of Jupiter aurorae.
Scanning the instrument slit over Jovian disc by means of internal pointing mirror, 200 lines.
Pointing type: YS, NADIR with fixed offset around Y (‘nadir offset MAJIS scan’)
satellte orientation: HORIZONTAL
Duration: 37 min (200 lines <-> typical size of latitudes where polar ovals are observed) | MAJIS |
|---|
| MAJIS_JovianRING_MOSAIC | Mosaicking the 2 ring ansa from 90000 to 230000 km. 3 overlapping cubes of 20 vertical lines performed by the scanner (or S/Cslew if compatible with JANUS). This requires re-pointing between individual cubes.
Pointing: OFF-NADIR, S/C pointing projected ring plane, S/C depointing required for the two ansa
Satellite orientation: Maintaining the horizontal orientation of MAJIS slit, MAJIS scan mode activated for vertical sampling (20 vertical lines) centered on the rings, S/C depointing required for mosaicking each ansa (3 overlapping cubes to perform a radial mosaic of one ansa of the rings with radial distance from 90000 to 230000 km)
Duration: 1200 sec (excluding the S/C repointings) | MAJIS |
|---|
| MAJIS_ICU | To monitor the radiometric performances of MAJIS using VISNIR and IR sources Specifically, there are several goals
A) tracking the evolution of the actual levels (before subtracting for CDS) in the digital dynamics (0-65535 at 100 kHz, 0-4095 at 1 MHz). Such an evolution could lead to adjust an offset which can be selected by TC (4 settings) so as to avoid reaching digital saturation for the read image before analog saturation.
B) tracking the evolution of the dark current and cosmetics (new hot / dead pixels)
C) tracking the evolution of the overall photometric response as a function of the signal (needed for the pipeline)
Pointing: MAJIS scan mirror oriented towards the ICU (8.5°)
Satellite orientation: Deep space
Duration: 10min | MAJIS |
|---|
| MAJIS_GEO5000 | During elliptical phase (~15 days before and after circular phase), mapping of selected areas (~40) at intermediate to high resolutions: 50 to <750 m/pix, bridging the gap in resolution between systematic mapping (MAJIS_GCO5000_global) and GCO ROIs (MAJIS_GCO500_HR).
Pointing: YS, NADIR
satellite orientation: MAJIS slit at a slant with the ground track except at the equator
Duration: from 35 min to 4H (Table 8 from budget report v2.1) | MAJIS |
|---|
| MAJIS_GCO5000_REGIONAL | During circular phase (~120 days), regional mapping of the surface of Ganymede, bridging the gap in resolution between systematic global mapping and HR ROI's observed at GCO-500.
750 m/pix (no spatial binning), 300x300 km swaths
Pointing type: YS, NADIR
Satellite orientation: MAJIS slit at a slant with the ground track except at the equator
Duration: 6min | MAJIS |
|---|
| MAJIS_GCO5000_LIMB | Latitudinal scanning of the diurnal limb at 1 km at different latitudes; study of the variability of the exospheric processes (sputtering, photodissociation, sublimation). Observe polar (north/south) and equatorial latitudes ; perform long-term and high-temporal-resolution monitoring.
Pointing: S/C limb tracking at locations where the slit is tangent to the limb
Satellite orientation: Off-nadir orientation, Slit tangent to the limb
Duration: 600sec | MAJIS |
|---|
| MAJIS_GCO5000_GLOBAL | Systematic mapping performed with cross-track binning by 4 during circular phase (~120 days)
3 km/pixel, 300x300 km swaths, spatial binning x 4.
Pointing: YS, Nadir
Satellite orientation: MAJIS slit at a slant with the ground track except at the equator
Duration: 4H per orbit (one cube: 6 min) | MAJIS |
|---|
| MAJIS_GCO5000_AURORA | Observations at auroral latitudes (30-35° N-S), at least in the dawn and dusk sides of Jovian magnetosphere.
Mapping at spatial resolution of about 1 km using the MAJIS scan
Pointing: S/C limb; no requirements on the slit orientation
Saletllite orientation: Off-nadir orientation | MAJIS |
|---|
| MAJIS_GCO500_LIMB | Mapping of selected areas on the dayside limb at resolutions of about 300 m at different latitudes (~30° in lat/lon from the nadir) to study variability of the exospheric processes (sputtering, photodissociation, sublimation). MAJIS scanning at different latitudes of the diurnal limb; a minimum of 3 (north,equat,south) x 2 (dawn, dusk) positions.
Pointing: S/C limb tracking at locations where the slit is tangent to the limb
satellite orientation: Off-nadir orientation, Slit tangent to the limb
Duration: 600 sec per cube | MAJIS |
|---|
| MAJIS_GCO500_HR | Observations in true push-broom of specific targets on the surface using motion compensation with the scanner
30 km cross-track x 8.7 km along-track @ 75 m/pixel
30 km cross-track x 17.4 km along-track @ 150 m/pixel (spatial binning x2)
Pointing: Nadir pointing, NYS ( ‘motion compensation PB’)
Satellite orientation: MAJIS slit perpendicular to the ground-track
Duration: One acquisition: 60 sec; switch-on procedure: 10 minutes (TBC) | MAJIS |
|---|
| MAJIS_FLYBY_MEDRES | Flyby observations of the satellite surface with vertical (N-S) slews or MAJIS scan providing medium spatial resolution (e.g.resolution from 3 km to 1 km/pixel for Ganymede). Perform when the S/C moves slowly from approach YS phase to PB phase and during PB phase.
Pointing: NYS, NADIR or OFF_NADIR after offset around Y ( ‘motion compensation PB’).
Satellite orientation: MAJIS slit across track. Satellite offsets around Y (off-track pointing) axis or around X axis (for slew).
Duration: a few minutes maximum | MAJIS |
|---|
| MAJIS_FLYBY_HR | High resolution pubshbroom flyby observations of satellite dayside surfaces bracketing closest approach. Satellite offsets around Y (off-track pointing) axis during or prior to observation allow near-nadir pointing of specific regions. Motion compensation or MAJIS scan is achieved using the MAJIS internal pointing mirror depending on the S/C speed and distance. Binning can be applied may be required near C/A.
Pointing: NYS, NADIR or OFF_NADIR after offset around Y (‘motion compensation PB’).
Satellite orientation: MAJIS slit across track, Satellite offsets around Y (off-track pointing) axis possible.
Duration: 20 to 130 sec | MAJIS |
|---|
| MAJIS_BORESIGHT_ALIGNEMENT | Star sequence for geometrical calibration.
A star is initially pointed using the MAJIS boresight, then MAJIS is operated with the scan mechanism at high resolution (1/3 of IFOV) over 18 lines centered in the star. Then this operation is successively observed after 4 S/C repointings of 1.5° around X and Y.
Pointing : inertial
Satellite orientation: S/C pointing the star and MAJIS scans
Duration: 18 to 180 sec per position (5 positions in total)+ stabilization time for repointing not taken into account | MAJIS |
|---|
| MAJIS_Amalthea | S/C pointing Amalthea preferentially near maximal elongation of (2.54 R_J), 2 hemispheres, MAJIS spatial windowing (16 rows)
pointing: OFF-NADIR, S/C pointing Amalthea at 2.54 R_J while maintaining horizontal orientation of MAJIS slit
satellite orientation: Maintaining horizontal orientation of MAJIS slit, MAJIS scan mode activated for vertical sampling centered on the satellite (10 lines)
Duration: 100 sec for one hemisphere | MAJIS |
|---|
| GALA_MONITORING_GAN | GALA will measure the time of flight between firing and receiving the returned laser signal during Ganymede phase | GALA |
|---|
| GALA_LR_FB_ALBEDO | GALA will passively measure the reflectance of the illuminated hemisphere of the satellite during flyby nadir phase.GALA will operate in passive albedo mode (DiagRx) | GALA |
|---|
| GALA_HR_TARGET_GAN | Region of Interest Observation at Ganymede | GALA |
|---|
| GALA_HR_FB | High resolution data acquisition around FB closest approach. GALA will measure the time of flight between firing and receiving the returned laser signal | GALA |
|---|
| GALA_IDLE | Transition from OFF to IDLE mode (and IDLE to OFF) | GALA |
|---|
| 3GM_USO_ON | USO is SWON and muted | 3GM |
|---|
| 3GM_RADIO_OCCULTATIONS | The radio science experiment 3GM, with its dual-frequency radio links (X and Ka-band) referenced to an ultrastable oscillator (USO), is performed as JUICE spacecraft moves in and out of occultation. Occultations occur throughout the jovian tour, but their phasing is not always synchronized with the timing of dedicated Jupiter observations by the other orbiter experiments. For instance, there are no occultations by Jupiter during the equatorial phase in 2030 and only 2 during the inclined orbital phase in 2031. The mission phase with the greatest number of Jupiter occultations (26) is the transfer to the Ganymede mission phase in 2032. The current planning tour offers a fairly regular sampling of latitudes between 54° S and 17° N and a rather global longitudinal coverage. USO unmuted, HAA in NOMINAL SCIENCE.
Note that 2 other options exist for torus occultations but are not (yet) defined in the database | 3GM |
|---|
| 3GM_HAA_STANDBY | HAA in STANDBY mode | 3GM |
|---|
| 3GM_GRAVITY_FOR_EPHEMERIDES | KaT ON during communication windows | 3GM |
|---|
| 3GM_GRAVITY | KaT and HAA for gravity science | 3GM |
|---|
| 3GM_BISTATIC_RADAR | characterization of the surface by determination of roughness, dielectric constant of surface material and material density. The chosen antenna points towards surface, radio signal reflects from surface and received on ground. USO unmuted | 3GM |
|---|
| 3GM HAA CALIBRATION | HAA in NOMINAL SCIENCE
Duration: 50min | 3GM |
|---|
| SWI_MECHANISM | Check of mechanism response to commands. Integration time on the CTS is 10 seconds. | SWI |
|---|
| SWI_POINTING_CCH | Determination of absolute pointing offset between S/C and SWI (for the 2 bands) recording continuum maps with the CCH 1 & 2. Integration time on the CCH is 0.1s. | SWI |
|---|
| SWI_POINTING_ACS | Determination of absolute pointing offset between S/C and SWI (for the 2 bands) recording continuum maps with the ACS 1 & 2. Integration time on the ACS is 1s. | SWI |
|---|
| SWI_POINTING_CTS | Determination of absolute pointing offset between S/C and SWI (for the 2 bands) recording continuum maps with the CTS 1 & 2. Integration time on the CTS is 1.5s. | SWI |
|---|
| SWI_POINTING_ACS_CCH | : Determination of absolute pointing offset between S/C and SWI (for the 2 bands) recording continuum maps with the ACS 1 & 2 and the CCH 1 & 2.Integration time on the ACS and CCH are 1s and 0.1s, respectively. | SWI |
|---|
| SWI_POINTING_CTS_CCH | Determination of absolute pointing offset between S/C and SWI (for the 2 bands) recording continuum maps with the CTS 1 & 2 and the CCH 1 & 2. Integration time on the CTS and CCH are 1.5s and 0.1s, respectively. | SWI |
|---|
| SWI_ALLAN_TOTAL_CCH | Allan variance characterization of the CCH 1 & 2 by integrating on the cold sky. Integration time is 0.1 s. | SWI |
|---|
| SWI_ALLAN_TOTAL_ACS | Allan variance characterization of the ACS 1 & 2 by integrating on the cold sky. Integration time is 1 s | SWI |
|---|
| SWI_ALLAN_TOTAL_CTS | Allan variance characterization of the CTS 1 & 2 by integrating on the cold sky. Integration time is 1.5 s. | SWI |
|---|